Acircular go-kart track has a diameter of 75 m approximately how long is the track

235.5

Step-by-step explanation:

so we are looking for circumference for this question

the equation for circumference in C=2r

so diameter is just twice the radius to all we have to do is take the diameter and times it by pi

so 75*(3.14) is going to equal to 235.5

so your answer is 235.5

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".